Homegrown Neighbor here. I’ve been wanting a greywater system for a long time. My old house does not exactly make access to the pipes easy, so I’m starting with just the washing machine. The neighbor, Mr. Homegrown, is anxious to try out a new design from Oasis.
Mr. Homegrown here. So I just found a local source for 1-inch polyethylene: Aqua-Flo. Cost is in the neighborhood of 33¢ a foot depending on how much you get. It comes in 20 foot and 100 foot lengths. So I think we’re gonna go with polyethylene. Incidentally, when I called Aqua-Flo they asked if I was going to make hula hoops.
A correction and update 7/25/09: The Aqua-Flo branch I went to does not have black 1-inch HDPE tubing in stock. Other branches have it, but only in 500 foot rolls that cost over $300. A roll that long would make sense for a contractor, but for DIY greywater installations it ain’t practical. Aqua-Flo does carry a new HDPE product called Blu-lock. You can get 1-inch Blu-lock in-100 foot rolls for a reasonable price (more info to follow in another post). Blu-lock uses special proprietary fittings that are easier to assemble than conventional mainline drip tubing and, intriguingly, allow for disassembly. I’m going to test Blu-lock and will report back on the results.